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During pregnancy the 

A. Uterine muscle enlarges due mainly to cell proliferation. 

B. Uterus is quiescent until the onset of labour. 

C. Breasts enlarge due mainly to the action of prolactin. 

D. Haematocrit rises. 

E. Basal metabolic rate rises by more than 10 per cent.

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A. False The enlargement is due more to an increase in the size of the muscle cells. 

B. False Spontaneous uterine contractions occur during pregnancy. 

C. False The enlargement is due mainly to oestrogen and progesterone. 

D. False It falls due to the increase in plasma volume. 

E. True It increases by about one-third.

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